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Low hydraulic head hydropower coagulation process method

A process method, low head technology, applied in the direction of flocculation/sedimentation water/sewage treatment, sedimentation tank, feeding/discharging device of sedimentation tank, etc. The problems of low effective utilization rate and insufficient mixing intensity have achieved the effect of ensuring consistency, good quadruple mixing effect, and significant energy saving and consumption reduction.

Active Publication Date: 2015-06-03
CENT & SOUTHERN CHINA MUNICIPAL ENG DESIGN & RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Utility model patent application "An Integrated Water Purifier" (notification number CN 2512772Y, announcement date 2002.9.25), the mixing and flocculation of the device is completed by a mixer and a three-stage vortex sleeve, but this method requires a special mixer and It needs electricity and maintenance workload. At the same time, the flocculation time of this method is short, the flocculation effect is average, and the effective utilization rate of the circular inclined tube is low, and the height is limited by engineering applications. Therefore, this method is difficult to scale up to a larger scale and difficult to Successfully applied to the sedimentation of inclined tubes in large-area rectangular pools
However, in the current relatively large-scale AO diatomite sewage treatment process, a large-scale hydraulic circulation clarifier is used, and the dosing and mixing of the hydraulic circulation clarification tank is mixed by a water pump impeller, which consumes a lot of energy and requires special equipment. pumping equipment and pump rooms
[0004] Invention patent application "Integrated device, system and process for biochemical treatment of sewage" (publication number CN 102923908A, publication date 2013.2.13), the water flow in the device is mixed with falling water after adding the chemical agent in the chemical spray perforated pipe , the mixing intensity is not sufficient, and the degree of contact and collision between the floc particles in the water body below the sedimentation component in the device is insufficient. To achieve qualified effluent quality, a relatively large amount of chemicals needs to be added. In addition, the device is large-scale The effect of water distribution becomes worse after enlargement, so there is room for further improvement of the mixing and flocculation effect of the device

Method used

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  • Low hydraulic head hydropower coagulation process method
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  • Low hydraulic head hydropower coagulation process method

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Embodiment 1

[0032] The present invention will be further described below by taking the accompanying drawings and embodiments as examples.

[0033] from figure 2 , image 3 with Figure 4 It can be seen from the figure that the L-type hydraulic mixing spinner of the main equipment used in the present invention is mainly composed of a water inlet 1, a water distribution tank 2, a double-layer perforated plate 3 in the tank, a wall-attached inclined tube 4, a spiral fixed blade 5, and an L-shaped curved tube. 6. The different-diameter nozzle 7 and the supporting member 8 are composed. In this L-shaped hydraulic mixing spinner, the upper and lower orifices of the double-layer perforated plate 3 in the water distribution tank 2 are staggered; the wall-attached inclined tube 4 is equipped with a second-stage spiral fixed blade 5; two L-shaped elbows 6 are arranged asymmetrically ; The different-diameter nozzle 7 at the end of the L-shaped elbow 6 is horizontal; the outlets of the two nozzle...

Embodiment 2

[0042] The sewage treatment capacity of a sewage treatment plant is 12,000 m 3 / d, there are 2 towers of 6000m each 3 / d's V-type air-lift integrated sewage treatment tank, adopts the low-head hydraulic coagulation process method of the present invention to carry out dosing, mixing and flocculation treatment of the clarified liquid in the clarification area of ​​the integrated tank, and a total of 2 sets of L-type hydraulic mixing For the spinner, the caliber specification of the L-shaped elbow 6 is 300×300mm, the design flow velocity of the square pipe is 0.77m / s, the nozzle caliber specification of the different-diameter nozzle 7 is 240×240mm, and the nozzle design flow velocity is 1.21m / s, Good coagulation effect and final effect of sewage treatment are obtained. The water quality is shown in the table below.

[0043] Sewage treatment plant design inlet and outlet water quality table

[0044] project COD BOD 5 SS TN NH 3 -N TP Influent water ...

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Abstract

The present invention provides a low hydraulic head hydropower coagulation process method, which mainly comprises that: a linear spraying perforated pipe is arranged above a water inlet to spray an agent, effects of diversion, mixing and spiral flow generation of an L-shaped hydropower hybrid spiral flow generator are adopted, and concurrently a contact flocculation effect of a suspension active sludge layer is adopted to achieve an integrated hydropower coagulation process of the low hydraulic head. Compared with the conventional coagulation method, the low hydraulic head hydropower coagulation process method of the present invention has the following characteristics that: coagulation efficiency is high, flocculation and water distribution of the suspension active sludge layer are balanced, an agent addition amount is small, the conventional water level height difference of the water treatment process is comprehensively utilized, electricity consumption is not generated, no movement part exists, operation is reliable, and the low hydraulic head hydropower coagulation process method is a coagulation process method with characteristics of high efficiency, energy saving and simpleness.

Description

technical field [0001] The present invention relates to a low water head hydraulic coagulation process, in particular, the full mixing and efficient flocculation of medicament and water are realized by using the diversion, hydraulic mixing, hydraulic spinning and contact flocculation of L-shaped hydraulic mixing spinner an integrated approach. Background technique [0002] In the field of water treatment, coagulation-sedimentation is one of the most basic water treatment methods or processes. In the tap water industry, coagulation-sedimentation-filtration-disinfection is the most conventional treatment method, and so far most of the world's surface water plants use this method to produce tap water; in the advanced sewage treatment process, coagulation-sedimentation It is one of the commonly used methods; in industrial wastewater treatment, coagulation-sedimentation is an important technical means. In order to realize the coagulation process, the agent and water should be m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D21/24C02F1/52B01D21/08
CPCY02P70/10
Inventor 刘贤斌李路刘学阳
Owner CENT & SOUTHERN CHINA MUNICIPAL ENG DESIGN & RES INST CO LTD
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